Reform and Practice of the “Material Preparation and Processing” Course Based on the O-PIRTAS Model: Cultivating Applied Talents for Engineering Education Accreditation

Under the global imperative of “Green Manufacturing” traditional teaching in Material Preparation and Processing faces challenges regarding abstract processes and insufficient environmental integration. To address this, we introduce the O-PIRTAS (Objective, Preparation, Instructional Video, Review, Test, Activity, Summary) flipped classroom model, guided by Outcome-Based Education (OBE). The course was reconstructed using the “Process-Structure-Properties-Performance” four-element logic and virtual simulation tools to visualize energy-intensive mechanisms. By establishing a “Theory–Simulation–Verification” closed loop, the model effectively narrows the chasm between theoretical learning and sustainable engineering practice. Using the “Liquid Metal Forming” module as a case study, results from three teaching cycles (2022–2025) demonstrate significant improvements: core objective achievement rose to 0.81, average final scores increased by 5 points, and the proportion of high-achieving students increased by 15%. This reform effectively enhances students’ comprehensive design capabilities, providing a valid paradigm for cultivating applied talents with an awareness of resource efficiency.